Improvement in paper boxes



C. L. LOCKWOOD 2 D. LYNCH.

PAPER-BOXES.

Patented Oct. 31.1876.

UNITED STATES PATENT OFFICEo CHARLES L. LOCKWCOD, OF PLAINFIELD, NEW JERSEY, AND DANIEL LYNCH, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN PAPER BOXES.

Specification forming part of Letters Patent No. 183,950, dated October 31, 1876; application filed October 5, 1876.

which the following-is a specification The object of our invention is to construct a paper box with flaps so adapted to each other as to effectually close the ends ofthe box. Y

In the accompanying drawing, Figure l is a view of the box-blank; Fig. 2, a view of the end of the box with the tlaps folded outward; Fig. 3,' the same with two of the flaps folded inward; Fig. 4, a view of the end of the box as it appears when closed; and Fig. 5, a side view, showing the relative position of two of the iaps as they are being closed.

The blank, Fig. l, is, in the present instance, made for a quadrangular box, and is creased on the vertical lines a, a', a, and a", so as to form the four sides A, A1, A2, and A3 of un-` equal width, a narrow strip, B, which adjoins the side A, being formed on the blank for attachment, by paste or glue, to the side A3, as shown in Fig. 2, thereby completing the body -of the box. At each end of the blank there are aps b b', which form continuations of the sides A1 and A3, the aps being creased on the lines w av, so that they can be turned down, and, overlapping each other, form the inner folds for closing the ends of the box, as shown in Fig. 3. Flaps d d form continuations ot' the side A, and each of these flaps has two inclined slots, m, for a purpose explained hereafter. Each end of the side A2 of the blank terminates in a ap, M, composed ot' the central strip n and two outer narrow strips, p p. After the flaps b b have been turned down, as shown in Fig. 3, the flaps d and M are held, one in each hand, and by a proper disposal of the fingers the flap M is so manipulated by one hand, while the other is engaged in folding down the ap d, that the outer strips p p shall be depressed, as in Fig. 5, beneath the flap d, while the central strip n shall overlap the said ap d. In depressing the two aps they are pushed toward each other, and the corners of the strip n are introduced into the inclined slots m m of thc flap d, as shown in Fig. 4, when the two flaps d and M Will be locked together and the end of the box closed. The arrangement of the slots m m in an inclined position on the iiap d permits the ready introduction of the corners of the strip 'n into the said slots. When the box is closed the stripspp of the Hap M underlapping the iiap d, and the latter underlapping the central strip n, the corners of which are retained within the slots, all combine to resist the efforts of the agitated contents Within the box to open the iaps, which, however, may be readily opened from without by simultaneously raising and pulling them apart.

It will be seen that the box-blanks are such that in cutting them out there will be but a very triiiing waste of pasteboard. It one end of the box has to be permanently closed, the upper sides of strips p p may be pasted to the under side, and the strip n to the upper side, of the ap d.

l. A paper box provided with opposite aps d and M, the latter of which consists of the strips p p and n, and the former having inclined slots m m, all substantially as set forth.

2. The within-described paper-box blank, consisting of the creased body, the plain iiaps b b, slotted tlaps d, and severed flaps M, all substantially as described.

1n testimony whereof We have signed our names to this specification in the presence of two subscribing witnesses.

CHARLES L. LOCKWOOD. DANIEL LYNCH. Witnesses:

HENRY HowsoN, Jr., HARRY SMITH. 

